Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d1abd2d2032f43…

MALICIOUS

PDF

50.2 KB Created: 2020-08-15 05:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8027affd1d747cc6f91f4257c2702600 SHA-1: 0c96f42290ca37a554620dc4eda9bb242f16bed1 SHA-256: 86d1abd2d2032f4370b59a7e70c8b69df8ac14dc3a555f83b2d6ae305b574845
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple links to external websites, including a known malicious redirector at 'https://ttraff.com/wb?keyword=eo%20on%20contractualization%20pdf'. The document body, though partially corrupted, includes text suggesting it is a PDF related to contractualization, which is likely a lure. The presence of numerous PDF links, many pointing to Shopify domains, suggests an attempt to obscure the malicious redirector and potentially distribute further payloads or conduct phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wb?keyword=eo%20on%20contractualization%20pdf In PDF document text
    • http://files.appwesley.org/uploads/1/3/2/6/132681488/e7cf2cb3190c.pdfIn PDF document text
    • http://files.saintpaulcatholicchurchpocahontas.com/uploads/1/3/2/7/132740865/9848483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/febuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3609/6150/files/36534984401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/91914187724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/9277219317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/zafugonaneziferizidimel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/vukekegegij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/kusixigozarumanavagolevip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/zibulivazatuwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/vatuxikamuzajura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/69784340685.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACD 4744 bytes
SHA-256: 4c94e9d2122cf955a51bc9d4b419acdd36179989eb2ae071c4c8100f83e8e1f8
font_01_sfnt_off00008af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF2 10304 bytes
SHA-256: 64b03c4bac72fd046e61f02e75358c3bd9fbc5f2cb1c9a007ff7c15233f4a607
font_02_sfnt_off0000ae24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE24 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3